Disposable vacuum cleaner bag



Dec. 17, 1968 J FESCQ DISPOSABLE VACUUM CLEANER BAG 2 Sheets-Sheet 1 Filed Jan. 31, 1967 INVENTOR. ./0//4 [656a Dec. 17, 1968 J. J. FESCO 3,

DISPOSABLE VACUUM CLEANER BAG I Filed Jan. 31., 1967 2 Sheets-Sheet 2 l N VEN TOR. Jay/v F5 .520

United States Patent 3,416,721 DISPOSABLE VACUUM CLEANER BAG John J. Fesco, Baldwin, N.Y., assignor to Studley Paper Company, Inc., Far Rockaway, N.Y., a corporation of New York Filed Jan. 31, 1967, Ser. No. 612,878 4 Claims. (Cl. 229-625) ABSTRACT OF THE DISCLOSURE This disclosure is directed to a new and improved vacuum cleaner bag particularly suitable for use in case type vacuum cleaners. More particularly, the disclosure is directed to a vacuum cleaner bag having improved and expanded capacity for dust and other material normally taken up by a vacuum cleaner. The invention is further directed to an improved vacuum cleaner filter bag constructed of air pervious paper, the bag comprising an endless bag wall, preferably consisting of pleated side walls. The bag is closed at one end as by sealing, stapling, etc. At the other end of the bag there is provided a closed end wall Which is located adjacent to a dust and air inlet and opposite thereto. The dust and air inlet is provided on the side of the bag, preferably on a corner, and is in a spaced relationship to the closed end wall such that when in operative position in a vacuum cleaner the closed end wall is moved away from the dust and air inlet providing an increased area for deposition of dust borne by air through the air pervious bag. The bag is preferably provided with a specially sized vertical pleat in the bag wall running vertically away from the closed end of the bag which in combination with the construction of the bag in the area of the dust and air inlet provides increased capacity for dust and dirt when the bag is expanded.

Background of the invention Disposable-type filter bags constructed of air pervious material e.g. paper have generally replaced the permanent but removable cloth type vacuum cleaner bags. The reason for the switch to the convenient disposable filter bags lies in the fact that the cloth bags after extensive use tend to build up dust and dirt in the pores thus cutting down on the efiiciency of the vacuuming operation and placing a burden on the vacuum cleaner motor. Furthermore, the housewife can readily dispose of the inexpensive bag with its dirt contents and thus avoid the necessity of emptying the cloth bag. The disposable filter bags are, in general, so constructed so that an enclosure is formed. The sides of the bag are integral with each other so that the bag is endless, being sealed vertically. The bottom of the bag is formed by folding the sides over on a horizontal plane and sealing as by stapling. Opposite the bottom of the bag is provided a flat top wall in the middle of which there is an inlet provided which is placed in registry with the air inlet to the vacuum. The flat top wall can be folded over a side of the bag due to the pleated construction of the bag and inwardly sloping walls on the sides of the bag adjacent the flat top piece. Unfortunately, bags of this construction have a limited capacity for dust or dirt. In addition, the bags do not readily inflate from a folded position due to blocking side walls.

Objects of the invention It is an object of this invention, therefore, to provide a disposable inflatable vacuum cleaner filter bag having improved capacity for dust and dirt.

It is another object of this invention, therefore, to provide such a disposable inflatable vacuum cleaner filter bag which is provided with an end piece which is foldable over the sides of the bag which bag distends readily by the action of a negative or vacuum pressure to a fully open bag.

It is still another object of this invention, therefore, to provide such a disposable inflatable vacuum cleaner filter bag provided with pleated side walls of different dimension so that the bag when distended by the vacuum pressure has greater capacity for deposition of dust, dirt or similar debris entrained in the air streams produced by the action of the vacuum cleaner.

These and other objects and advantages of the invention will become apparent to one skilled in the art from the following more complete description of the invention, accompanying drawings and appended claims.

Summary of the invention Broadly, this invention contemplates a vacuum cleaner filter bag suitably of the disposable type comprising an endless bag wall closed at one end and at the other end formed into a closed end wall, said closed end wall being in spaced relationship to a dust inlet positioned on said bag wall opposite said closed end wall and adjacent thereto, said bag constructed of an air pervious material.

Brief description of drawings The invention can be more readily understood by reference to the accompanying drawings in which:

FIGURE 1 is a perspective view of the bag of the invention, partially exploded to show the handle and air port separately.

FIGURE 2 is a side elevation of the bag of the invention.

FIGURE 3 is a side elevation similar to FIGURE 2 but of the opposite side which elevation is partially broken away.

FIGURE 4 is a sectional elevation taken along the line 4-4 of FIGURE 1.

FIGURE 5 is a side elevation of the bag showing pleats.

FIGURE 6 is another side elevation of the bag showing the same side illustrated in FIGURE 3, with the closed end wall raised.

FIGURE 7 is a perspective view of a case type vacuum cleaner with the bag in place along a side of the vacuum cleaner preparatory to turning on the vacuum cleaner motor and distending the bag. The closed end wall is opposite and adjacent the dust and air inlet and is foldable over the side of the bag.

FIGURE 8 is a plan view of an open case type vacuum cleaner with the bag of this invention fitted to the vacuum cleaner, the bag being distended due to the suction action of the vacuum cleaner.

Description of preferred embodiment A preferred embodiment of this invention is shown in the accompanying drawings in which the bag is generally represented by reference numeral -2 and is constructed of an air pervious material, suitably air pervious paper. The bag 2 comprises a flat side piece 4 folded at both ends 6 and 8. Opposite fiat side piece 4 is flat side piece 10, the side pieces 4 and 10 being joined by pleated or folded sides 12 and 14. Folded sides 12 and 14 are provided with triangularly shaped inwardly folding sides 16 and 16a adjacent flat side piece 4 and extending from end 6 to end 8. Adjacent triangularly shaped inwardly folding sides 16 and 1611 are triangularly shaped outwardly extending sides 18 and 18a. Adjacent triangularly shaped outwardly extending sides 18 and 18a are inwardly extending side panels 20 and 20a which are at pleat 22 joined with outwardly extending pieces 24 and 24a which overlie one another and are sealed at 26 using adhesive, staple or the like. The pleated bag is closed near end 8 at 28 by heat sealing, adhesive sealing, stapling or other well known 3 sealing methods by folding the bag ends over upon itself at fold 30. The bag 2 is thus endless as shown in FIGURE 4, having a continuous side sealed at 26. Hence, there are three pair of outwardly extending bag ridges, one pair of which does not extend across the entire width of bag 2.

Adjacent end 6 is a closed end wall generally designated by reference numeral 32 which is foldable adjacent fiat side piece 4 over end 6. Closed end wall 32 is joined with triangularly shaped inwardly folding sides 16 and 16a and outwardly extending sides 18 and 1811 by triangularly shaped inwardly extending upper side wall members 34 and 34a and triangularly shaped outwardly sloping walls 36 and 36a (member 34 existing opposite member 34a but not visible). Members 34 and 34a extend inwardly and downwardly toward the center of the bag and toward one another. Thus inwardly folding sides 16 and 16a having triangular shape and outwardly extending sides 18 and 18a are integrally joined with closed end wall 32 at point 38 by virtue of triangularly shaped members 34 and 34a which at inside downwardly extending seam 40 meet triangularly shaped sloping walls 36 and 36a which extend upwardly from seam 40 to seam 42 which seam is common to wall 36a and side 18a on the side 14 of the bag 2 and wall 36 and side 18 on the side 12 of bag 2. Seam 44 is common to side 16a and member 34a on side 14 as shown in FIGURE 5. Seam 46 extends downwardly from point 38 and is common to side 16a and side 18a, also as shown in FIGURE 5. The same relationship of sides, members, walls, seams and pleats exists on the side 12 with relation to its components.

On the first side piece 4 of bag 2 there is formed air and dust inlet 50 formed by a U-shaped cut in fiat side piece 4. The inlet 50 is positioned opposite to closed end wall 32 but is adjacent to it so that suction caused by a vacuum machine causes air being sucked through inlet 50 to move closed end wall 32 away from fiat side piece 4 to provide for deposition of dust, dirt and similar debris. Inlet 50 is provided with U-shaped flap 52 inwardly extending and overlying inlet 50 as seen in FIGURE 5. Inlet 50 has adhesive thereabout shown by the stippling in FIGURE 1. Adhesively secured to flat side piece 4 is A panel 54 provided with an aperture 56 having a resilient collar piece 58 also provided with an aperture which partially overlies inlet 50 and is in registry with aperture 56. This resilient collar piece 58 is suitably constructed of a plastic or rubber material which flap 52 is suitably constructed of light weight plastic preferably thin provid-- ing lock against escape of dust etc. Panel 54 also embodies handle 60 which facilitates removal of the bag when filled and ready for disposal. Panel 54 is rigid and suitably constructed of cardboard or other firm composition material. It overlies end 6 at 62 as shown in FIG- URES 2 and 3.

The closed end wall 32 is constructed suitably of the same paper material of which the balance of the bag exclusive of panel 54 etc. is constructed. On closed end wall 32 edges 64 and 66 are secured, e.g. by adhesive, folding over upon end panel member 68 which folds over upon flat side piece and inwardly extending side panels and 20a. Flat side piece 10 opposite fiat side piece 4 does not extend the entire width of the bag as shown by FIG- URE 3. Instead, it represents only about 50 percent the width so that the bag is readily ballooned out into a fully expanded and distended bag with increased capacity for dust, dirt and debris deposition.

In operation, the bag is placed in the vacuum cleaner 70 in the space provided therefor with the fiat side piece 4 up in fact to face relationship with the inside wall of cleaner 70 and the closed end wall 32 folded over the side piece 10 as shown in FIGURE 7. The aperture 56 is in registry with an aperature in the cleaner through which the nozzle or pipe 72 passes. The pipe or an annular connection thereto passes through the aperture in resilient collar piece 58, through the U-shaped fiap 52 pushing the flap inwardly and inside bag 2, thereby providing an air and dust inlet. The vacuum cleaner is turned on. Since the air inlet is opposite but adjacent the closed end wall 32, closed end wall 32 receives the initial force of the air being drawn through the bag. This causes it to swing counterclockwise against wall 74 of cleaner 70 allowing the subsequent force of the air to distend the bag beginning with said piece 10 which moves toward wall 76 of cleaner 70. The sides of bag 2 open progressively until the entire area of cleaner 70 provided for occupation by the bag 2 is filled with the expanded bag. The direction of the air flow is shown by the air directional flow lines in FIGURE 8.

From the foregoing it is seen that the instant invention provides a full expandable disposably vacuum cleaner filter bag. The bag readily distends because of the location of the normally most resistant distendable member of the bag to a position whereby it is fully distended. The instant invention provides a bag which has increased capacity for dust, dirt and similar debris.

The foregoing specification and drawings are intended solely for the purpose of illustrating the nature of the invention and the manner of practicing the same as there is no intention to limit the invention, or any portion thereof, to any specific embodiment as certain modifications and departures from the specification within the scope and spirit of the invention will be apparent to one skilled in the art.

What is claimed is:

1. A vacuum cleaner filter bag comprising an endless bag wall closed at one end and at the other end formed into a closed end wall, said closed end wall overlying in fiattened condition a portion of a main bag wall and being in spaced relationship to a dust inlet positioned on said bag wall opposite said closed end wall [and] adjacent thereto, said bag constructed of an air pervious material, said bag is provided with a vertically extending side wall extending in width over less than the entire width of said bag, wherein said bag has a flat side wall on one side thereof and on the other side is provided with a wall having three pair of outwardly extending pleats.

2. A vacuum cleaner filter bag according to claim 1 wherein said inlet is provided on a corner of said bag wall adjacent said closed end wall.

3. A vacuum cleaner filter bag according to claim 1 wherein said inlet is provided with an inwardly extending flap over which extends partially a resilient collar member.

4. A vacuum cleaner filter bag according to claim 1 wherein said bag is constructed of air pervious paper said flap is constructed of light weight plastic and said collar is constructed of rubber.

References Cited UNITED STATES PATENTS 1,948,569 2/ 1934 Falk. 2,336,584 12/1943 Andrew 22962.5 3,197,118 7/1965 Meyerhoefer 22953 X 3,297,232 1/1967 Fesco 22953 3,245,605 4/ 1966 Meyerhoefer 22953 DAVID M. BOCKENEK, Primary Examiner.

US. 01. X. R. 22953; 55-367 

